Centrifugal liquid-separator.



J. V. M. RISBERG a G. W. JOHANSSON.

GENTRIE'UGAL LIQUID SEPARATOR. AAPPLICATION ULEB JULY 12, 1909y Patente Sept. l2, i911.

7 'SHEETS-SHBBT 1.

y .if

J. V. M. RISBERG & G. W. JOHANSSON.

GENTRIFUGAL LIQUID SBPARATOR.

APPLIUATION FILED JUL'Y 12, 190e.

Patented Sept. 12, 1911. 7 sums-SHEET z.

J. V. M. RISBBRG da G. WA JOHAKSSON4 GENTRIFUGAL LIQUID SEPARATOR,

.APPLCATION FILED JULY 12,1909,

Patented Sept. l2, 1911.

7 SHEETS-SHEET www l V. M. RISBERG cf; G. W. JOHANSSON. CETRIFUGAL LQUID SEFARTOR. APPLICATION FILED JULY 12, 1909,

LGPSIQQ Patented Sept. 12, 1911.

J. V. M. RISBBRG a G. W. JOHANSSON. GENTRIPUGAL LIQUID SEPARATOR.

APPLICATION FILED JULY 12, 1909.

Patented Sept. 12, 1911.

7 SHEE'I'SSHEET 5.

J. v. M. RISBBRG & G.' JOHA'NSSON. GENTRIFUGAL LIQUID SBPAR'IIOR.

APPLICATION FILED JULY 12, 1909. 1,003,206, Patented sept. 12,1911.

7 SHEETS-SHEET 6.

d l @Q6 /f u f; 4 "6 41 J. VIM. lRISBEIMJ? & G. W. JOHANSSON. GENTRIPUGAL LIQUID SEPARATOR.

APPLICATION FILED JULY 12, 1909.

Patented Sept. 12, 1911.

l 7 SHEETS-SHEHT 7.

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' STA'IE S PATENT OFFICE.

JOHQNNES VAIDEMAR MR-TEN RISBERG AND GUSTAF WILHELM J'OHANSSON, OF SODERTELJE, SVEIDEN, ASSIGNORS TO AKTIEBOLAGET BALTIC, 0F SDERTELJE,

SWEDEN.

CENTRIFUGL LIQUDSEPARATOR.

Specification 0f Letters Patent.

Patented' sept. 12, 1011.

Application filed July 12, 1309. Serial 110.507,12.

To all whom it may concern:

' 3, Sdertelje,`in the Kingdom of Sweden,

and Gt'sfrxr IVILHELM fIoiixxssoiv, a resident of Ostra Badliusgatan 3, Sdertelje, in

the Kingdom of Sweden, both subjects of theA King of Sweden, have invented an Improvement in Centrifugal Liquid-Separatore, of which the following is a specification.

In the construction of centrifugal liquid separators it is desirable to arrange for the location of the outlets for the cream and skimmed milk to be as near as possible to the axis of rotation of the drum in order that the power required to operate the separator may be reduced to a minimum. This of course is particularly true in regard to hand operated machines. 4

One of t-lie objects of our invention is therefore the construction of a centrifugal liquid separator in which both the cream and skim milk discharges of the centrifugal liq-V cream will remain the same when once fixed,

irrespective of whether the hood of the bowl always assumes the same relative posit-ion to the bowl with which the saine is employed or not.

To accomplish these objects the hood of the bowl and the cover plate are both provided with neck portions of reduced cross section and an adjusting plug is placed in the reduced neck portion of the hood of the bowl and an initial cream discharge orifice is placed in the neck of the cover plate in a position juxtaposed to the plug in the neck of the hood of the bowl, as will be herein.

after more particularly described.

In the accompanying drawings Figures 1, 3, f1, 5 and T show in vertical sections different forms of carrying out our invention. Fig. 2 is a section on the line QWQ of Fig. .1. Fig. G is a plan view of the centrifugal liquid separator shown in Fig. the connecting nut is omitted. Fig. 8 is a section on the line 8 8of Fig. 7. Figs. 9, 11, 13, 14 and 15 show in vertical sections various modificationsof the invention. Fig. 10 is a section on the line 10-10 of -F ig. 9, viewed from below. Fig. 12 is a section on the line-12-12 of Fig. 11, viewed from below; Figs. 16, 17, 18 and 19 show different forms of the regulating plug.`

In Figs. 1 to 15 inclusive, 1 is the hood of the separator bowl, 2 the cover plate; 3 a ring shaped shoulder or contracted "part in the neck of the hood 1; 4 th'e Voutlet opening for the skimmed milk, 5 an outlet opening for the cream provided in the cover plate, 6 a regulating plug in screw-threaded engagement with the hood; 8 a connecting nut and 9 a central inlet pipe.

In Figs. 1 and 2 4the regulation is effected by the regulating plug 6 mounted in the,

lindrical neck o-f the cover plate 2. By ro' tating the plug 6 in one direction or the other the extent of the passage for the escaping cream canbe adjusted nicely. In order to prevent both the liquids, separated `from each other, from being mingled with one anv other a shoulder or contracted part 3 is pro# vided in the neck of the hood, below the outlet opening 5 for the cream, the outlet openings t for the skimmed milk being provided in the lower part of the contracted partf.

'In the form of our invention' shown in Fig. 3 the regulating plug 6 has a cylindrical, inward extending partl 6l and theoutlet opening for the cream in the cover plate :2 is'located in the angle between thecylindrical neck of the said plate and t-he inward extending part of the s'aine and has such a shape, that it can be closed to its full extent by the part 61 of the plug. The contractedv part 3 of the neck of tlie hood 1 is effected by the hood being made in two parts a and l), the upper edge of the lower part b forming the shoulder 3 and extending into the upper part u. The said ,parts a and o are soldered together or securely connected in any 'suitable manner.

Fig. 4 shows a forni of our invention in which the outlet opening 5 for the cream in the cover plate 2 is provided in the inward extending part or top of the said plate and the regulating plug' 6 is located in the upper, inward. extendingpart or top of the hoodl. The contracted part or. shoulder 3 in thel neck of the hood 1 is eliected by the contracted lower edge of the top part a of lthe hood 1-` being inserted into the upper fected by the outlet opening 7 Jfor the cream y being provided in the inward extending part of the .bowl and by a part of the central inlet pipe 9 being cut away longitudiv`nally opposite the regulating plug 6, Fig. 6,

a reduction of the diameter of the neck of the bowl being thereby made possible. This plain longitudinal iiattened surface of the central tube also serves as aguide fory the. hood as well as for thecover plate and the liner plates.

In Figs. Tand 8 the regulation is etfected by a plug 6 provided in the side wall of the hood, as in Figs. 1 and 2, but the outlet opening 5 for the cream in the cover plate is' provided opposite to the contracted part 3 of the neck of the hood and-the outlet openings 4 for the skimmed milk are located above the outlet opening for the cream. For that reason a cavity 10 is provided in the inner side of the neck ofthe' hood, around the regulating plug 6, into which the cream passes before escaping through the opening i I l 4o' v y' .erably cylindrical, rwhich entends through they outlet opening 5 for thev 'cream provided 7. The skimmed milk passes to the outlet openings 4, through channels 11 provided in thefcontracted part 3.

UIn Figs. .9 and 10, which show the preferred form ot' our invention, the regulating vscrew threaded plug 6 in the hood 1 is provided with'an linward extending part61,pref

in the cover plate, the said part 61 being cut .away longitudinally at one side. By rotating the. plug 6 in one direction or the other the space between the 4part 61 and the side wall of the opening is moved nearer to or farther from the vertical center line of the centrifugal bowl or is located to a less or greater extent inside the cream zone, the quantity of the escaping cream being thus decreased or vincreased accordingly.

In the form of our invention shown in Figs. 11 and 12, the cylindrical extended part 61 of the regulating plug 6 is cut away longitudinally only for a part of its length. The top of the said part 61 fits in an opening provided in the inward extending top part of the cover plate 2. The outlet opening 5 for the cream in the cover plate is provided in the cylindrical top part of the same. By rotating the plug 6 the outlet opening 5 is closed to a greater or less extent, or is enltirely closed.

13, the regulation is effected by the part 61 of the plug 6 extending into the cover plate 2, being made hollow and outside the said plate 2 provided with one, (or more) side opening 17 for the escaping cream. Vhen the regulating plug is rotated the side opening 17 in the same is located at a greater or less distance from the vertical center line of the bowl, the. quantity of the escaping cream being thus varied in the same manner as in Figs.. 9 and10. l

Fig. 14 shows a form of thev invention, which differs from the form shown in Fig. 13 bythe fact, that the hollow inward extending part 61 of the regulating plug 6 extends beyond an outlet opening 5 for the cream provided in the neck of the cover plate 2, the said part 61 being provided in its side wall with an opening 17, located opposite the outlet opening 5. The regulation is eftec-ted by so rotating the plug, that the opening 5 is closed to its whole or partial extent.

Fig. 15 shows a form, in which the hollow inward extending part 61 of the regulating plugl 6, providedwith the outlet opening 17, incloses a nipple 5 provided on the cover plate 2 and forming the outlet opening for the cream. By rotating the plug 6 the distance of the outlet opening 17 from the vertical center line ot' the bowl is increased or decreased and the regulation thus effected. Fig. 15 also shows an arrangement by means of which the skimmed milk is prevented frombeing mingled with the cream. In the constructions of the centrifugal bowl shown in the figures before mentioned there is the disadvantage in order that the location of `the cream zone be suiiciently near to the center lineof the bowl, the outlet openings tor the skimmed lmilk sometimes vmust be made so narrow, that the chamber below the contracted part 3 is lilledi with skimmed milk, which results in the said milk squeezing between the said part 3 and ,the neck of the cover plate 2 and being mingled with the cream, provided that the part 3 does not tit snugly around the neck of the cover plate 2, which 1t does not always do. The said dis advantage is removed by providing the outer .cap 1 with a further contracted ring shaped part 1S below the part 3, between which and the neck of the cover plate 2 a space 12 1s lett. By adapting the width of the said space-the position of the cream zone isnevidently regulated. Owing to the said arrangement the outlet openings 4 may be made so wide, that the chamber below the contractedpart .3 is not filled with skimmed milk and consequently no milk will pass between the contracted part 3 and the neck of the cap 2. The contracted part 18 may extend to the said` neck, if outletchannels tor the skimmed milk are provided in the In the form of execution shown in Fig. l said part.

Fig. 16 shows a regulating plug 6, the part 61 of which is cut od at opposite sides and to dilferent extents radially, so that the plug can easily be adjusted for leaving a passage for a greater or less quantity of cream escaping from the bowl. This arrangementmay be substituted by the arrangement showny in Fig. 17, in vwhich the regulating plug is provided with two longitudinal grooves 13 14 of diiferent depths.

jFig. 18 shows a regulating plug 6 which is adapted to the bowl shown in Fig. 14 and the inward extending cylindrical hollow part 61L of which is provided withda slot 15, instead of an opening 10 as shown in Fig. 14.

Fig. 19 shows a regulating plug 6, provided with a channel 17 for the cream extending throu h the whole plug. One part 16 of the sai channel 17 has an eccentric position with relation to t-he rotary axis-of the plug. lThe said plug acts in thel same manner as the plug shown in Fig. 9.

It will `be seen that the moving longitulinally of the regulating plug shown in Figs. 9 to 15 inclusive and 18, has no inlluence upon the regulation of the outlet opening for the cream. Consequently a slight changing in the position of the cover plate vertically with relation to the hood will not effect in anydegree the regulation of the said opening. Owing to the said fact also an ordinary un-screw threaded plug may be used.

We claim as our,` invention:-

1. In a centrifugal liquid separator and in combination, a. separator bowl, a hood therefor provided with a milk discharge opening, a plug in the walls ofthe said hood, and a cover plate having a cream dischar efopening therein in a position juxtaposed to the said plug, which is adjustable to regulate the flow through the said cream discharge opening in the cover plate.

2. In a centrifugal liquid separator and imcombination, a separator bowl, a hood therefor provided with a milk discharge opening, a plug in the walls of the said hood, a cover plate having a cream discharge opening therein in a position juxtaposed to the said plug, whichis adjustable to regulate the flow through the said cream discharge opening in the cover plate, and

a central intake pipe leading through said hood and cover late.

3, In a centri ugal liquid separator and in combination, a bowl, a hood for the bowl, a cover plate, the said cover plate .and hood both having reduced neck portions, the one fitting within the other, a central intake pipe leading through the said hood and cover plate, and an adjustable plug placed directly in the walls of the neck portlon of the hood in a juxtaposed position to the cream discharge opening in the neck 'f the cover plate so that they flow of. creamv through said opening is dependent upon the distance between the same and the adjacent portion of the plug.

4. In a centrifugal liquid separator and in combination, a hood for the separator.,

the said plug, the said central intake pipe being provided with a flattened portion to permit of the said discharge opening being placed close to the axis of rotation of the separator.

5. In a centrifugal liquid separator and in combination, a hood for the separator bowl, the said hood having a reduced neck portion, a cover plate, said cover plate'having a reduced neck portion iitting within the reduced n'eck portion of the said hood in such amanner as to provide separate cream and skimmed milk chambers between said parts, and an adjustable plug in the walls of the reduced neck portion of the said hood, there being a cream discharge aperture provided in the walls of the reduced neck portion of the cover plate in a position juxtaposed to that of the said plug, so that the position of the plug inthe hood regulates the flow of cream through the opening in the said cover plate.

6. In a centrifugal liquid separator and in combination, a hood for the separator bowl, the said hood having a reduced neck portioma cover plate, said cover plate havlng a reduced neck portion fitting within the reduced neck portion of the said hood in such a manner as to provide separate cream and skimmed milk chambers between` said parts, a central intake pipe passing through the tops of the reduced neck portions of the said hood and cover plateand a-plug in the top of the reduced neck portion of the said hood, there being a cream discharge opening provided in the top of the reduced neck portion of the cover plate -in a position juxtaposed to the said plug,

so that the position of the plug in the hood regulates the flow of cream through the opening in the said cover plate.

7. In a centrifugal liquid separator and in combination, a hoodr for the separator bowl, the said hood having a reduced neck portion, a cover plate, said cover plate .having a reduced neck portion fitting Within the reduced neck portion of the said hood in such a manner as to provide a skimmed `milk passage between said parts, a plug in the top of the reduced neck portion of the` said hood, there being` o cream dlscharge -opening provided in the reduced neck portion of the cover plate in `a position juxtaposed to the said plug, .and a pin secured to the said plug, passing through the said cream discharge aperture in the reduced neck portion of the cover plate to control4 the How of cream therethrough.

8. Ina centrifugal liquid separator and' 'in combination, a hood for the separator the top @of the reduced neckportion of the said hood, there being a cream discharge e opening provided inthe top of the reduced neck portion of the cover plate in a position juxtaposed to the said p1ug,'and a pin secured to the said plug and adapted toenter the said cream discharge aperture in the top of the reduced neck portion of the cover plate so that the position of the said i'n and plug relatively to the Saidcreain` 1s- `charge aperture control and determine the' iiow therethrough.

In witness whereof, we have hereunto signed our names 'in the presence of two subscrlbing witnesses.

JOHANNES VALDEMAR MRTEN RISBERG. GUSTAF WILHELM J OHANSSON.

Witnesses ANA SDnRsTRoM Romina` APELGREY 

